VPCONFLICTD/VPCONFLICTQ — Detect Conflicts Within a Vector of Packed Dword/Qword Values into Dense Memory/ Register

Instruction Operand Encoding ¶

Description ¶

Test each dword/qword element of the source operand (the second operand) for equality with all other elements in the source operand closer to the least significant element. Each element’s comparison results form a bit vector, which is then zero extended and written to the destination according to the writemask.

EVEX.512 encoded version: The source operand is a ZMM register, a 512-bit memory location, or a 512-bit vector broadcasted from a 32/64-bit memory location. The destination operand is a ZMM register, conditionally updated using writemask k1.

EVEX.256 encoded version: The source operand is a YMM register, a 256-bit memory location, or a 256-bit vector broadcasted from a 32/64-bit memory location. The destination operand is a YMM register, conditionally updated using writemask k1.

EVEX.128 encoded version: The source operand is a XMM register, a 128-bit memory location, or a 128-bit vector broadcasted from a 32/64-bit memory location. The destination operand is a XMM register, conditionally updated using writemask k1.

EVEX.vvvv is reserved and must be 1111b otherwise instructions will #UD.

Operation ¶

VPCONFLICTD ¶

(KL, VL) = (4, 128), (8, 256), (16, 512)
FOR j←0 TO KL-1
    i←j*32
    IF MaskBit(j) OR *no writemask*THEN
        FOR k←0 TO j-1
            m←k*32
            IF ((SRC[i+31:i] = SRC[m+31:m])) THEN
                DEST[i+k] ← 1
            ELSE
                DEST[i+k] ← 0
            FI
        ENDFOR
        DEST[i+31:i+j] ← 0
    ELSE
        IF *merging-masking* THEN
            *DEST[i+31:i] remains unchanged*
        ELSE
            DEST[i+31:i] ← 0
        FI
    FI
ENDFOR
DEST[MAXVL-1:VL] ← 0

VPCONFLICTQ ¶

(KL, VL) = (2, 128), (4, 256), (8, 512)
FOR j←0 TO KL-1
        i←j*64
        IF MaskBit(j) OR *no writemask*THEN
            FOR k←0 TO j-1
                    m←k*64
                        IF ((SRC[i+63:i] = SRC[m+63:m])) THEN
                            DEST[i+k] ← 1
                        ELSE
                            DEST[i+k] ← 0
                    FI
            ENDFOR
            DEST[i+63:i+j] ← 0
    ELSE
            IF *merging-masking* THEN
                        *DEST[i+63:i] remains unchanged*
                ELSE
                        DEST[i+63:i] ← 0
                FI
    FI
ENDFOR
DEST[MAXVL-1:VL] ← 0

Intel C/C++ Compiler Intrinsic Equivalent ¶

VPCONFLICTD __m512i _mm512_conflict_epi32( __m512i a);

VPCONFLICTD __m512i _mm512_mask_conflict_epi32(__m512i s, __mmask16 m, __m512i a);

VPCONFLICTD __m512i _mm512_maskz_conflict_epi32(__mmask16 m, __m512i a);

VPCONFLICTQ __m512i _mm512_conflict_epi64( __m512i a);

VPCONFLICTQ __m512i _mm512_mask_conflict_epi64(__m512i s, __mmask8 m, __m512i a);

VPCONFLICTQ __m512i _mm512_maskz_conflict_epi64(__mmask8 m, __m512i a);

VPCONFLICTD __m256i _mm256_conflict_epi32( __m256i a);

VPCONFLICTD __m256i _mm256_mask_conflict_epi32(__m256i s, __mmask8 m, __m256i a);

VPCONFLICTD __m256i _mm256_maskz_conflict_epi32(__mmask8 m, __m256i a);

VPCONFLICTQ __m256i _mm256_conflict_epi64( __m256i a);

VPCONFLICTQ __m256i _mm256_mask_conflict_epi64(__m256i s, __mmask8 m, __m256i a);

VPCONFLICTQ __m256i _mm256_maskz_conflict_epi64(__mmask8 m, __m256i a);

VPCONFLICTD __m128i _mm_conflict_epi32( __m128i a);

VPCONFLICTD __m128i _mm_mask_conflict_epi32(__m128i s, __mmask8 m, __m128i a);

VPCONFLICTD __m128i _mm_maskz_conflict_epi32(__mmask8 m, __m128i a);

VPCONFLICTQ __m128i _mm_conflict_epi64( __m128i a);

VPCONFLICTQ __m128i _mm_mask_conflict_epi64(__m128i s, __mmask8 m, __m128i a);

VPCONFLICTQ __m128i _mm_maskz_conflict_epi64(__mmask8 m, __m128i a);

SIMD Floating-Point Exceptions ¶

None

Other Exceptions ¶

EVEX-encoded instruction, see Exceptions Type E4NF.